Technical Note: An efficient method for accelerating the spin-up process for process-based biogeochemistry modelsстатья

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Дата последнего поиска статьи во внешних источниках: 16 января 2019 г.

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[1] Yang Q., Maksyutov S., Zhuang Q. Technical note: An efficient method for accelerating the spin-up process for process-based biogeochemistry models // Biogeosciences Discussions. — 2018. — P. 1–20. To better understand the role of terrestrial ecosystems in the global carbon cycle and their feedbacks to the global climate system, process-based biogeochemistry models need to be improved with respect to model parameterization and model structure. To achieve these improvements, the spin-up time for those differential equation-based models needs to be shortened. Here, an algorithm for a fast spin-up was developed and implemented in a biogeochemistry model, the Terrestrial Ecosystem Model (TEM). With the new spin-up algorithm, we showed that the model reached a steady state in less than 10 years of computing time, while the original method requires more than 200 years on average of model run. For the test sites with five different plant function types, the new method saves over 90 % of the original spin-up time in site-level simulations. In North America simulations, average spin-up time saving for all grid cells is 85 % for either daily or monthly version of TEM. The developed spin-up method shall greatly facilitate our future quantification of carbon dynamics at fine spatial and temporal scales. [ DOI ]

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